Update ci_shellcheck.yml: Ignore SC2317

.github/workflows/ci_shellcheck.yml

@@ -17,15 +17,15 @@ jobs:
     # The type of runner that the job will run on
     runs-on: ubuntu-latest
 
-    # Steps represent a sequence of tasks that will be executed as part of the job
+    # "steps" represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2
 
-      # Runs a set of commands using the runners shell
+      # Runs a set of commands using the runner's shell
       - name: check bash files
         run: |
-          # check bash files (bash -n, shellchecki -x)
+          # check bash files (bash -n, shellcheck -x)
           err=0
           for i in $(find . -maxdepth 2 -name '*.sh'); do
             echo "==================== $i"
@@ -58,8 +58,9 @@ jobs:
                 #SC2069: Something about the order of >&2 and > xxx
                 #SC2024: similar to SC2069
                 #SC2269: This variable is assigned to itself
+                #SC2317: Command appears to be unreachable
                 ###shellcheck -x -e SC1090 -e SC1091 -e SC2004 -e SC2155 -e SC2181 -e SC2188 -e SC2024 -e SC2069 -e SC2269 $i || this_err=1
-                shellcheck -x -e SC2004 -e SC2155 -e SC2181 -e SC2188 -e SC2024 -e SC2069 -e SC2269 $i || this_err=1
+                shellcheck -x -e SC2004 -e SC2155 -e SC2181 -e SC2188 -e SC2024 -e SC2069 -e SC2269 -e SC2317 $i || this_err=1
                 ;;
             esac
             if [ ${this_err} -eq 1 ]; then